Hair clipper and method of forming the same
Disclosed is a hair clipper for cutting and trimming the hair of humans or animals. The hair clipper includes a hair clipper case, blade assembly and a motor drivingly coupled to the blade. The hair clipper includes a first and second fan that blows air over the motor to cool the motor so that the hair clipper does not get hot to the touch. The hair clipper also includes an ergonomically designed case that helps the barber or hair stylist hold, grip and easily maneuver the hair clipper. The hair clipper also includes a power cord with a power converter in the plug end of the power cord. Power cord collects 120 Volts AC power from a wall socket, and conducts both 120 volt AC power and 5 volt DC power to the hair clipper. Both 120 volt AC power to motor and 5 volt DC power to cooling fans have separate off and on switches that regulates power, which allows the fans to run separate from motor.
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This invention relates to hair clippers and in particular to a hair clipper with an ergonomically designed case that contains two cooling fans and a power cord that delivers 5 volt power to the cooling fans.
State of the Art
Electric hair clippers, also called hair trimmers, have been in common use by barbers and hair stylists for over a century. A hair clipper includes a blade assembly that is drivingly coupled to a motor. The motor moves the blades of the blade assembly such that the blades cut hair. The hair clipper is used to trim and cut either human or animal hair. Improvements in hair clipper heat dissipation capability, power consumption, user comfort and safety are continually needed to improve the user and client experience.
Embodiments of the present invention relate to hair clippers and in particular to a hair clipper with an ergonomically designed case that contains two cooling fans and a power cord that provides 5 volt power for the cooling fans, as well as 120 volt power to the motor. The hair clipper includes two cooling fans that are enclosed in the clipper case with a clipper motor. A first cooling fan is enclosed in a hollow cylindrical projection formed as part of the clipper case. The first cooling fan is enclosed in the hollow cylindrical projection above the clipper motor, and draws air into the case and towards the motor. A second cooling fan is enclosed in the clipper case towards a cord end of the case, and draws air away from the motor. Both cooling fans draw 5 volts of direct current (DC) power, whereas the motor uses 120 volt alternating current (AC) power. The disclosed clipper has a power cord with a power converter contained in a plug of the power cord. The power converter converts 120 volts AC power received from the wall receptacle into 5 volts DC power. The power cord then conducts both 120 volts AC power and 5 volts DC power from the plug to the hair clipper case. The power cord supplies the 120 volt AC power to the motor, and the 5 volts DC power to the first and the second fan. The clipper case is ergonomically designed with a thumb indent in the top portion of the case, three finger indents in the bottom portion of the case, and a blade guard surrounding much of the blade. The disclosed clipper stays cool during use, is easier to control to obtain more precise hair trimming, and protects the client from the blade.
Electric hair trimmers, or clippers, have been in common use by barbers and hair stylists for over a century. A hair clipper includes a blade assembly that is drivingly coupled to a motor. The motor moves the blades of the blade assembly in such a way that the blades cut hair. The motor and the blade assembly are contained in a clipper case that obtains 120 volt AC power from an electric cord that plugs into a wall outlet.
There are several issues with common types of hair clippers. First of all, the hair clipper motor emits heat during use, and the hair clipper case becomes hot. In order to keep from getting burned by the hot clipper case, barbers typically buy two or more hair clippers and alternate their use. While a first hair clipper is cooling down, the barber uses a second hair clipper. When the second hair clipper becomes hot, they set it down and go back to using the first hair clipper, which has hopefully cooled down. It is desirable to have a hair clipper that does not heat up during use and, therefore, require the purchase of more than one hair clipper.
In addition, clipper cases can be unwieldy to handle. Hair clipper cases are typically smooth plastic or metal with few, if any surface features or textures. A good barber needs to move the clippers with precision to trim hair and create the desired hair layering and trimming. It is desirable to have a clipper case with strategically placed features so the case can be held securely and maneuvered easily and flowingly with the fingers while trimming. It is also desirable for the clipper case to have features that protect the client's ears and skin from being nicked by the trimmer blade during precision and close trimming.
Clipper case 112 includes a bottom portion 122 and a top portion 128. Bottom portion 122 and top portion 128 removeably couple together in this embodiment to enclose the contents of hair clipper 110. In some embodiments clipper case 112 uses a single-piece case, or a case with more than two portions. Top portion 128 has a top portion blade end 130 and a top portion cord end 132. Bottom portion 122 has a bottom portion blade end 124 and a bottom portion cord end 126 (See
Clipper case 112 includes a motor power switch 156 coupled to top portion 128. Motor power switch 156 is an electrical switch which turns power on and off to motor 116. Motor power switch 156 is a toggle switch in this embodiment, but this is not meant to be limiting. Motor power switch 156 can be any type of switch configured to turn power on and off to motor 116.
Second fan 120 is positioned beneath motor power switch 156, see
Top portion 128 also includes a hollow cylindrical projection 134. Hollow cylindrical projection 134 extends outward from top portion 128 and encloses first fan 118, as shown in
First fan 118 draws outside cool air 176 into clipper case 112 through vent holes 142 and towards motor 116 to cool motor 116. Second fan 120 draws warm air 178 from near motor 116 away from motor 116 and out side vent holes 172. First and second fans 118 and 120 act together to cool motor 116 and direct air into case 112, over motor 116, and out case 112, keeping motor 116 cool enough to use continuously.
Top portion 128 also includes a thumb indent 158 (See
Top portion 128 also includes an ergonomically designed blade guard 170 (see
Fan power switch 144 is used in hair clipper 110 so that motor 116 and fans 118 and 120 do not use the same power switch, and thus do not have to be either on or of at the same time. It is advantageous for the user of hair clipper 110 to be able to use clipper 110 to cut hair, with motor 116 turned on, without turning on fans 118 and 120. For example, a user may want to make a cut or trim with hair clipper 110 that does not take much time and will not cause hair clipper 110 to heat up. In this example is it advantageous for the user of hair clipper 110 to be able to turn on motor 116 with motor power switch 156, without turning on fans 118 and 120, in other words fan power switch 144 is left off. On other instances, it is advantageous for the user to be able to turn on fans 118 and 120, without turning on motor 116. For example, if hair clipper 110 has been in use for a while and is heating up, the user may want fans 118 and 120 to continue to run and cool hair clipper 110, even while motor 116 is turned of and hair clipper 110 is set down. While the barber is attending to other grooming tasks, hair clipper 110 is set down and motor 116 turned off with motor power switch 156. Fans 118 and 120, however, can be used to turn fans 118 and 120 on without motor 116 being turned on, allowing fans 118 and 120 to cool motor 116 while hair clipper 110 is not being used to trim hair. The ability to turn motor 116 and fans 118 and 120 on and off independently of each other great increases the ease of use of hair clipper 110, the ability to use only one hair clipper 110 without it becoming overheated, and the comfort of both the barber and the client. In some embodiments fans 118 and 120 are provided with their own power switches, so that fan 118 and fan 120 can be turned on and off independently of each other, and independently of motor 116. This provides even more flexibility in the use of hair clipper 110.
Bottom portion 122 includes three finger indents 146, 148, and 150 (see
Case 112 is finished with a rubber texturized finish on surface 113 of case 112 (see
Plug 182 includes power converter 180, which in this embodiment converts 120 volt AC power into 5 volt DC power. Power converter 180 is electrically connected to 120 volt AC power conductor 162 and ground conductor 184. Power converter 180 receives 120 volt AC power from 120 volt AC conductor 162 and outputs 5 volts DC power on 5 volt DC power conductor 164 in response. Five volt DC power conductor 164 conducts 5 volt DC power from power converter 180 in plug 182 at plug end 166 of power cord 160, to clipper end 168 of power cord 160. Five volt DC power conductor 164 conducts 5 volt DC power into case 112 and to both first and second fan 118 and 120 through fan power switch 144. When power cord 160 is plugged into a wall receptacle and fan power switch 144 is closed, 5 volt DC power is delivered to fans 118 and 120. Clipper 110 uses power converter 180 because fans 118 and 120 run on 5 volt DC power. Fans 118 and 120 are designed to use 5 V DC power in order to lower power consumption and heat generation of hair clipper 110. Clipper 110 used power converter 180 in plug 182 so that power converter 180 does not add weight, take up room or generate heat inside clipper case 112. This allows clipper 110 to stay cool, while retaining a small form factor. If power converter 180 was located inside case 112, hair clipper 110 would weigh more consume more power, generate even more heat, and be unwieldy to handle while clipping hair.
In some embodiments method 200 includes the step of forming a clipper case. In some embodiments the step of forming a clipper case includes forming a hollow cylindrical projection in the clipper case for enclosing a fan. In some embodiments method 200 includes the step of mounting a fan inside the clipper case such that it is enclosed by the hollow cylindrical projection.
The clipper case can be any size and shape to accommodate different types, sizes, and styles of hair clippers.
The embodiments and examples set forth herein were presented in order to best explain the present invention and its practical application and to thereby enable those of ordinary skill in the art to make and use the invention. However, those of ordinary skill in the art will recognize that the foregoing description and examples have been presented for the purposes of illustration and example only. The description as set forth is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the teachings above. Appendix A attached with this document includes additional drawings of embodiments of the disclosed hair clipper.
1. A hand held apparatus for clipping hair, said apparatus comprising:
- a hair clipper case,
- a blade assembly,
- a motor drivingly coupled to the blade,
- two cooling fans,
- first and secondary off/on switches: whereas the first switch turns power off/on to the motor and the secondary switch turns power off/on to the cooling fans,
- a power cord that brings 120 v AC power from a wall receptacle to said motor and 5 volt DC power to said cooling fans: wherein the power cord comprises four leads, two of the said leads go from the 120 volt wall receptacle to the first off/on switch to the motor, and the other two leads go from the 120 volt wall receptacle to a power inverter, to the secondary on/off on switch to the cooling fans.
2. The apparatus set forth in claim 1, wherein said cooling fans blow air over the motor to cool the motor so that the apparatus for clipping hair does not get hot to the touch.
3. The apparatus set forth in claim 1 further wherein the power inverter is in a plug end of the power cord.
4. The apparatus set forth in claim 3 wherein the apparatus receives a secondary 120 volt AC power source from the wall receptacle to the power inverter to be converted to 5 volt DC power, which after being converted sends 5 volt DC power source to the cooling fans.
5. The apparatus set forth in claim 1 wherein said switch is a power interrupter disposed in a 120 volt power line to the motor that turns power off/on to the motor and said second off/on switch is a power interrupter disposed in a 5 volt DC power line to the cooling fans source that goes from a power inverter to the cooling fans and turns power on/off to the cooling fans so that the cooling fans can run simultaneously or separately from the motor when the motor is off.
6. The apparatus set forth in claim 1 wherein the two separate off/on switches allow for selectively supplying power to the motor and or the cooling fans.
International Classification: B26B 19/38 (20060101); B26B 19/28 (20060101);